Side-by-side comparison

Paula's Choice C15 Super Booster vs SkinCeuticals Phloretin CF

Both are serums. They share a 77% active-ingredient overlap, so the real decision is about price, texture and the supporting ingredients. Here's the side-by-side.

77%Active overlap
Paula's Choice
C15 Super Booster
SerumPremiumMorning only
Dark SpotsAgingDullnessSensitive skinDamaged barrier

15% L-ascorbic acid with vitamin E and ferulic acid — the classic CE Ferulic-style antioxidant trio at a slightly lower price. Small bottle is deliberate: L-AA oxidises once air-exposed, so smaller packaging keeps potency up.

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SkinCeuticals
Phloretin CF
SerumLuxuryMorning only
Photoaging PreventionDark SpotsDullness

A daytime antioxidant serum with 10% vitamin C, phloretin and ferulic acid, the oily/combination-skin sibling to C E Ferulic. Strong environmental defence and tone support; a luxury-priced clinical antioxidant.

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The verdict

Which should you choose?

On price, the Paula's Choice C15 Super Booster sits in the Premium tier versus Luxury for the SkinCeuticals — so it's the more budget-led pick if the overlap is what you're after. The Paula's Choice leans toward Aging. The SkinCeuticals leans toward Photoaging Prevention.

The overlap

What they share

At 77% active overlap, these are the ingredients doing comparable work in both formulas:

Ferulic AcidVitamin C
The formulation

Ingredient stacks, side by side

Paula's Choice — top of the list

  • Water~50–80%
  • Ethoxydiglycol~5–25%
  • Ascorbic Acid15%
  • Glycerin~2–6%
  • Propylene Glycol~1.5–4%

SkinCeuticals — top of the list

  • Aqua~50–80%
  • Ascorbic Acid~5–25%
  • Propylene Glycol~3–10%
  • Phloretin~2–6%
  • Ferulic Acid~1.5–4%

● marks ingredients that appear near the top of both lists. Percentages are positional estimates from INCI order, not disclosed doses.

At a glance

The specs

Paula's ChoiceSkinCeuticals
CategorySerumSerum
Price tierPremiumLuxury
Best forDark Spots, Aging, DullnessPhotoaging Prevention, Dark Spots, Dullness
Usage notesMorning onlyMorning only
Active overlap77% — Ferulic Acid, Vitamin C
Questions

Common questions

Is the Paula's Choice C15 Super Booster or the SkinCeuticals Phloretin CF better?
Neither is universally better — they share 77% active-ingredient overlap, so for the actives that drive results they're close. The Paula's Choice C15 Super Booster is the more budget-friendly option, while the other may differ on texture, finish and supporting ingredients. Pick based on your skin's priorities rather than a single 'winner'.
What's the difference between the Paula's Choice C15 Super Booster and the SkinCeuticals Phloretin CF?
Both are serums that share Ferulic Acid, Vitamin C. Where they differ: they sit in different price tiers (Premium vs Luxury); the Paula's Choice targets Aging; the SkinCeuticals targets Photoaging Prevention.
Are the Paula's Choice C15 Super Booster and SkinCeuticals Phloretin CF dupes for each other?
They share 77% active-ingredient overlap based on published INCI lists, so one can stand in for the other on the actives that matter — chiefly Ferulic Acid, Vitamin C. A dupe matches the hero actives, not the full sensory experience, so expect differences in texture, fragrance and exact concentrations.
Can I use the Paula's Choice C15 Super Booster and SkinCeuticals Phloretin CF together?
They both fill the serum slot in a routine, so you'd normally pick one rather than layer both. If you want to use both, treat one as your daytime option and the other for evening, and patch-test when introducing anything new.
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77% overlap

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